Right air bag malfunction error and check engine light for crank case. This is a very common problem that Mercedes explained to me and also told me to check back for recalls because their vni system will probably show one
2014 Mercedes-Benz CLA-Class electrical problems
severe 43 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
43
Recalls
0
Avg fix
$850
1crash
1fire
2injuries
When does it fail?
Of the 43 electrical complaints filed for the 2014 Mercedes-Benz CLA-Class, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 7 model years of Mercedes-Benz CLA-Class we track for electrical problems, this one carries the most owner complaints on file — 43.
Owners have filed 43 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
What owners are reporting 7 most recent
Air bags: frontal- sounds like the airbag lock spring is broken for no reason. I can hear the click when I turn. The digital dash reads "front left malfunction" and won'y go away no matter what I push. It also has an electrical system: starter assembly issue- the engine or transmission won't turn over a lot due to it. My car only had 40k miles.
Bought brand new cla250 a year ago and driving last week on the high way and "inoperative mode" went on and you lose all acceleration power. After I pulled over finally restarting the car a few times I regained acceleration. Currently at dealer being assessed
Tl* the contact owns a 2014 Mercedes benz cla250. The contact stated that while driving approximately 30 MPH, the pre safe function unavailable warning light illuminated and the vehicle stalled. The vehicle was able to be restarted. The failure recurred twice. The vehicle was taken to a dealer, who updated the computer system but the failure persisted. The manufacturer was notified of the…
My son had to be cut out of the seat back because it was too tight and wrapped around him. The seatbelt strap was locked and would not extend out at all to loosen for extra length on the strap. The seatbelt strap was so tight my sons stomach was was cinched to the point where he couldn't breath. I'm not sure why the suspension on the strap was locked every other seatbelt had extended strap. This…
While traveling at 50mph down a busy street during my morning rush hour commute, the vehicle cut off all power and went into "pre-safe mode" which is commonly known as "limp home mode." when this happens, the driver has no ability to accelerate and if the driver is unable to pull over in a safe area, puts them at extremely high risk of serious accident. This is a common problem with many…
What is the problem-pre safe malfunction error when does it happen-while driving is it predictable-no is it safe-no why-the car suddenly loses acceleration ,when the pre-safe error comes on. Scenario-driving a cla 250 at 60 MPH on a motorway on a quiet road in front of a truck.... Pre-safe malfunction kicks in the car slows down and loses accln. The truck driver cannot predict this…
Had electrical trouble with your 2014 Mercedes-Benz CLA-Class?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2014 Mercedes-Benz CLA-Class?
It's a meaningful issue. 43 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 30 complaints that reported odometer mileage, most electrical failures cluster between 5,200 and 22,000 miles, with the median around 20,000. A quarter of owners report trouble before 5,200; a quarter make it past 22,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2014/Mercedes-Benz/CLA-Class.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.